CODEWITHSUNDEEP
javaeclipsemultithreadingdebugging
David says Reinstate Monica
David says Reinstate Monica

Reputation: 20139

Eclipse suspend a specific thread while letting others run

Is there a way for the debugger to pause a specific thread while letting the other ones run? I want to verify some locks I have are working properly and Im not sure how to induce certain conditions. Note that all the threads run through the same code, so any changes to the code will affect all threads, where as I only want to stop one thread.

Upvotes: 2

Views: 1676

Answers (4)

sevensevens
sevensevens

Reputation: 1750

You might want to look at testing frameworks like MultithreadedTC - which lets you programmatically control flow through the different threads during the test so you can cause race conditions and timeouts during testing.

Upvotes: 1

David says Reinstate Monica
David says Reinstate Monica

Reputation: 20139

I was able to sort of fix my own problem by basically putting the following code in the thread code - 

if(Thread.currentThread.getName()="thread1"){
    Thread.currentThread.sleep(5000);
}

This way only thread 1 sleeps. It worked well enough that I saw my locks working, but this isnt really a good solution I feel. Perhaps someone can make something better?

Upvotes: 0

Enrique San Martín
Enrique San Martín

Reputation: 2246

You can add a method to do a sleep in the thread. Then you can call that method with junit or a simple POJO.

Upvotes: 0

andersschuller
andersschuller

Reputation: 13907

If you have a convenient point in your code to set a breakpoint for that single thread, you can change the Suspend Policy of that breakpoint in its properties to only stop the current thread instead of the whole VM.

Upvotes: 0

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